DICP OpenIR
Reduced charge recombination in a co-sensitized quantum dot solar cell with two different sizes of CdSe quantum dot
Chen, J.1; Lei, W.1; Deng, W. Q.2
Source PublicationNANOSCALE
2011
DOI10.1039/c0nr00591f
Volume3Issue:2Pages:674-677
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordEFFICIENCY ; MULTIPLICATION ; NANOCRYSTALS ; LIGHT ; CDTE
AbstractAn efficient photoelectrode is fabricated by sequentially assembling 2.5 nm and 3.5 nm CdSe quantum dots (QDs) onto a TiO(2) film. As revealed by UV-vis absorption spectroscopy, two sizes of CdSe QD can be effectively adsorbed on the TiO(2) film. With a broader light absorption range and better coverage of CdSe QDs on the TiO(2) film, a power conversion efficiency of 1.26% has been achieved for the TiO(2)/CdSe QD (2.5 nm)/CdSe QD (3.5 nm) cell under the illumination of one Sun (AM 1.5G, 100 mW cm(-2)). Electrochemical impedance spectroscopy shows that the electron lifetime for the device based on TiO(2)/CdSe QD (2.5 nm)/CdSe QD (3.5 nm) is longer than that for devices based on TiO(2)/CdSe QD (2.5 nm) and TiO(2)/CdSe QD (3.5 nm), indicating that the charge recombination at the interface is reduced by sensitizing with two kinds of CdSe QDs.
Language英语
WOS IDWOS:000287363500035
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142377
Collection中国科学院大连化学物理研究所
Affiliation1.Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Chen, J.,Lei, W.,Deng, W. Q.. Reduced charge recombination in a co-sensitized quantum dot solar cell with two different sizes of CdSe quantum dot[J]. NANOSCALE,2011,3(2):674-677.
APA Chen, J.,Lei, W.,&Deng, W. Q..(2011).Reduced charge recombination in a co-sensitized quantum dot solar cell with two different sizes of CdSe quantum dot.NANOSCALE,3(2),674-677.
MLA Chen, J.,et al."Reduced charge recombination in a co-sensitized quantum dot solar cell with two different sizes of CdSe quantum dot".NANOSCALE 3.2(2011):674-677.
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